Improper input validation in Umbraco Forms
CVE-2025-23041
Umbraco.Forms is a web form framework written for the nuget ecosystem. Character limits configured by editors for short and long answer fields are validated only client-side, not server-side. This issue has been patched in versions 8.13.16, 10.5.7, 13.2.2, and 14.1.2. Users are advised to upgrade. There are no known workarounds for this issue.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.004 (29.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 29.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Umbraco Forms
- Umbraco Umbraco.forms.issues — versions < 8.13.16, >= 10.0.0, < 10.5.7, >= 11.0.0, < 13.2.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/umbraco/Umbraco.Forms.Issues/security/advisories/GHSA-9v8m-qv22-f268 (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-23041?
- CVE-2025-23041 is a medium-severity vulnerability in Umbraco Forms, classified under Improper Input Validation. CVSS score: 5.8/10. Published 2025-01-14.
- How severe is CVE-2025-23041?
- Medium severity. CVSS v3 base score is 5.8 out of 10.
- Is CVE-2025-23041 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.